I will soon be photographing our local mountains (Sierra Nevada range, 14K+ foot peak elevation), and I'd like to get a sunrise shot where the peaks of the mountains are illuminated by the first light of sunrise, while the bodies and base of the mountains are still in shadow. I will be at 8000 feet elevation shooting up at the peaks. My problem is that, when shooting such a composition in the past, the color of the peaks has been overly warm (distant trees appear yellow rather than green, etc.). Does anyone have a suggestion as a what filter I should use to retain a warm, sunrise-looking effect while making the trees and other detail elements appear more normal? I assume this would be a cooling filter, but there are a number of varieties (80 series, 82 series, etc.) and intensities of these filters to choose from. I will be shooting Provia 100F and either 160VC or the new Fuji 160S in 8x10.